Half to laweence



(N0 Models.)

G. W. SOWLBS..

l MTIVE POWER FOR SEWING MACHINES.

No. 254,172. Patented-Feb. 28,1882.

:Il 1f A UNITED. STATES PATENT OEEIOE.

GEORGE W. sOWLEs, OE OEITTENANGO, NEW YoRx,Ass1GNOR OE ONE- HALE troLAWRENCE o. HEsLER, OE sAME PLAGE.

SPECIFICATION forming part of Letters Patent No. 254,172, dated February28, 1882. Application filed January 20, 1882. (No model.)

To all whom it may concern:

Be it known that I, GEORGE W. SOWLEs, of Chittenango, in the county ofMadison, in the State of New York, have invented new andusefullmprovements in Motive Powers for Sewing-Machines, of which thefollowing, taken in connection with the accompanying drawings, is afull, clear, and exact description.

This invention relates to improvements in the class of sewing-machineswhich are operated by the power of a spring and by gearings4 whichtransmit said power and impart motion to the sewing mechanism.

The invention consists in a novel, simple, and effect-ive arrangement ofa brake-lever Which is adapted to be connected to almost anysewing-machine standard and readily removed therefrom when desired, andis capable of effectually controlling the motion of the machine.

In the annexed drawings, Figure l is a vcrtical transverse section of asewing-machine provided with my improvement, and Fig. 2 is alongitudinal section on line a: in Fig. 1. Similar letters of referenceindicate corresponding parts.

A represents the usual standard of a sewing-machine table.

S is a coil-spring wound upon a1nandrel,m, which is journaled in hangersh, secured to the under side of the top plate of the table.

B is a spur-wheel mounted on the mandrel m, and meshing in a pinion, O,which, together with a belt wheel or pulley, E, is journaled on a studsecured to the standard A. A belt, n, extended around lthe wheel E andaround a pulley, o, on a mandrel mounted on top of the table, transmitsmotion to the sewing mechan- 1sm.

ldenotes the brake-lever, designed to control the motion ot' themachine, said lever bcing connected to the machine by means of ahanger-arm, a, which is' attached to the standard A, and terminates witha horizontal projection,1', from the top of which projects a stud,b,-said stud passing through a hole in the lever l, which is fulcrumedonlthe projection i of the hanger.

To the side of the projectionz' toward the free end of the lever ishinged a plate, c, and over this plate the lever l is provided with atransverse slot, s, through which slot passesa set-screw, r, whichenters the plate c. The hinged connection between the plate c and thehanger-arm in conjunction with the slot s and setscrew r allows thelever to oscillate both vertically and horizontally.

One end of the lever is extended under the wheel E, and is provided witha post,d, which carries a brake-shoe, D, which by pressure on theopposite end of the lever is brought to bear onto the periphery' of thesaid wheel, and by such frictional contact checks the motion thereof. i

The lever can be retained in such contact by swinging the free endthereotl toward the standard A and into engagement with a catch, c, onsaid standard.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is-

In combination with the spring-actuated driving mechanism of asewing-machine and the standard A, the hanger a, provided With the studb, the plato c, hinged on said hanger, the lever l, pivoted on the studb, and provided over the plate c with the transverse slot s, theset-screw r, passing through said slot and entering the plate c, thepostd on the end of the lever, and provided with the brake-shoe D, and asuitable catch, e, on the standard A, all constructed and combined,substantially in the manner described and shown.

In testimony whereof I have signed my name and affixed my seal, in thepresence of two attesting witnesses, at Syracuse, in the county` ofOnondaga, in the State ot' New York, this 2d day of January, 1882.

GEORGE WM. SOWLES. [L. sl Witnesses:

CHARLES GARLICK, WM. 0. RAYMOND.

